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FM Alignment of 48-482
#5

Hey Sean, I too have a 48-482 and use it every day. My FM seemed to track OK so I left it alone. The FM 1000 alignment procedure was different depending what write up I looked at so I pretty much left it alone too. I would be concerned about making a gross change to coils in the VHF band. Even a slight repositioning of seemingly benign components can cause a change.
New subject: I wound up making a change for the sake of AM/ SW performance by adding a .01uf cap to the cathode resistors (180 ohm) of the 2nd and 3rd IF amps. This greatly increased the sensitivity. I don't understand why they are missing from the factory but it sure helped. FM still seems OK for local and distant stations.
I like Terry's trick with the ferrite and copper to determint tuning direction.

Dave Casazza
Keep em glowin and goin...


Messages In This Thread
FM Alignment of 48-482 - by Sean - 11-21-2009, 11:06 AM
Re: FM Alignment of 48-482 - by Ron Ramirez - 12-01-2009, 08:29 AM
Re: FM Alignment of 48-482 - by Terry Judkins - 12-03-2009, 10:53 PM
Re: FM Alignment of 48-482 - by Sean - 12-05-2009, 05:21 PM
Re: FM Alignment of 48-482 - by DCASAZZA - 12-10-2009, 09:38 AM
Re: FM Alignment of 48-482 - by Don Lind - 12-12-2009, 02:27 PM
Re: FM Alignment of 48-482 - by Sean - 01-05-2010, 09:50 AM
Re: FM Alignment of 48-482 - by Ron Ramirez - 01-05-2010, 11:08 AM
Re: FM Alignment of 48-482 - by Sean - 01-09-2010, 02:08 PM
Re: FM Alignment of 48-482 - by Ron Ramirez - 01-09-2010, 03:06 PM



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